<div class="container login">
	<form class="form-signin">
		<h2 class="form-signin-heading">请登录</h2>
		<input type="text" class="form-control" placeholder="用户名" autofocus>
		<input type="password" class="form-control" placeholder="密码">
		<label class="checkbox">
			<input type="checkbox" value="remember-me"> 记住密码
		</label>
		<button class="btn btn-lg btn-primary btn-block" type="submit">登录</button>
	</form>
</div>